emptylistexception.java

这个程序是为了更好的理解

// Fig. 20.4: EmptyListException.java
// Class EmptyListException definition.
package com.deitel.jhtp5.ch20;

public class EmptyListException extends RuntimeException {

   // no-argument constructor
   public EmptyListException()
   {
      this( "List" );   // call other EmptyListException constructor
   }

   // constructor
   public EmptyListException( String name )
   {
      super( name + " is empty" );  // call superclass constructor
   }

} // end class EmptyListException

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